I suppose that the floor that the characters are on the third image, is ice...Is it?If it is, I think reflecting both the mountains back there and the characters it will be nice.

The sky could be more blue-ish, is kinda gray... The characters are awesome , really. Consider improving water animation, maybe putting more frames to smooth.Hope some of these gifs can help you. The water is very dark too. Too much purple i think.

About thermometer, it is incredible! Leave it intact, is actually very good.

Thermometers usually go the otherway, with the red bit going down from the top.

Hmm, I have never seen a thermometer going down from up. I think the thermometer looks great with all those freezing effects and stuff.I love the chars and the colors. The char third from the right looks really funny and cute. I also love what you did with sub-zero. Is this for an Android game? Great stuff!

"Because the beauty of the human body is that it hasn't a single muscle which doesn't serve its purpose; that there's not a line wasted; that every detail of it fits one idea, the idea of a man and the life of a man."

Mr. Fahrenheit is right, Mercury in thermometer is rising on the high temperatures and lowering on low ones. So when it's colder red should go down instead of up like in first thermometer. Mercury is contained in the bulb and it's just expanding and shrinking depending on temperature.

Out of all people Mr. Fahrenheit definitely knows thing or two about temperature.